<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			* {
				margin: 0;
				padding: 0;
			}

			.box {
				width: 1200px;
				height: 400px;
				background-color: pink;
				/* position: absolute; */
				position: relative;
				/* 相对定位 */
				/* top: 100px; */
				/* left: 100px; */
				/* right: 100px; */
				margin: 0 auto;

			}

			.box .pic {
				width: 100%;
				height: 100%;
			}

			.box .left_ {
				width: 56px;
				height: 64px;
				background-color: rgba(0, 0, 0, .4);
				position: absolute;
				top: 50%;
				left: 0;
				transform: translateY(-50%);
			}

			.box .left_ img {
				position: absolute;
				top: 0;
				left: 0;
				right: 0;
				bottom: 0;
				margin: auto;
			}
			.box .right_ {
				width: 56px;
				height: 64px;
				background-color: rgba(0, 0, 0, .4);
				position: absolute;
				top: 50%;
				right: 0;
				transform: translateY(-50%);
			}
			
			.box .right_ img {
				position: absolute;
				top: 0;
				left: 0;
				right: 0;
				bottom: 0;
				margin: auto;
			}
		</style>
	</head>
	<body>
		<div class="box">
			<img src="./img/1.jpg" alt="" class="pic">
			<div class="left_">
				<img src="./img/leftjiantou.png" alt="">
			</div>
			<div class="right_">
				<img src="./img/rightjiantou.png" alt="">
			</div>
		</div>
	</body>
</html>
